What is the most important thing that can be done to save the polar bear?

Absolutely the most important thing – and really the only thing – that will save polar bears in the long run is to stop the rise of greenhouse gases and stop the warming of the planet. There are many things that we can do on the ground to make a better world for polar bears while we are also addressing the greenhouse gas issue, but my 2010 research and subsequent studies have shown that on the ground activities are not by themselves capable of saving the polar bears.